What are the ABCD2I score components?

A: Age ≥60 = 1pt; B: BP ≥140/90 = 1pt; C: Clinical — unilateral weakness = 2pt, speech without weakness = 1pt, other = 0pt; D: Duration — ≥60min = 2pt, 10–59min = 1pt, <10min = 0pt; D: Diabetes = 1pt; I: Imaging — DWI infarct = 2pt. Total 0–9.

What ABCD2I score requires urgent evaluation?

ABCD2 score ≥4 (high risk): 2-day stroke risk ~8%; requires urgent evaluation and admission or rapid outpatient TIA clinic within 24 hours. Score 0–3 (low risk): 2-day risk ~1%. AHA/ASA guidelines recommend urgent evaluation for all TIA regardless of ABCD2 score.

Does DWI imaging change TIA management?

DWI-positive TIA (brain infarct visible on MRI) carries 2–3× higher subsequent stroke risk than DWI-negative TIA. Most guidelines recommend dual antiplatelet therapy (aspirin + clopidogrel × 21 days) for high-risk TIA and minor stroke (POINT, CHANCE trials).

ABCD2I Score for TIA Stroke Risk with Imaging

Calculates the ABCD2I score (ABCD2 + imaging) for 2-day and 7-day stroke risk after TIA: Age ≥60 (1pt), BP ≥140/90 (1pt), Clinical features — unilateral weakness (2pt)/speech without weakness (1pt), Duration 10–59min (1pt)/≥60min (2pt), Diabetes (1pt), plus DWI infarction (+2pt). Total 0–9; score ≥4 = high risk.

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ABCD2I Score for TIA Stroke Risk with Imaging

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Frequently Asked Questions

What are the ABCD2I score components?

What ABCD2I score requires urgent evaluation?

Does DWI imaging change TIA management?